#8143 Add EclipseTextFileReader with unit test

unit

ApplicationLibCode/FileInterface/RifEclipseTextFileReader.h

@@ -0,0 +1,71 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2021     Equinor ASA
+//
+//  ResInsight is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
+//  WARRANTY; without even the implied warranty of MERCHANTABILITY or
+//  FITNESS FOR A PARTICULAR PURPOSE.
+//
+//  See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
+//  for more details.
+//
+/////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include "RifReaderInterface.h"
+
+class RifEclipseKeywordContent
+{
+public:
+    std::string        keyword;
+    std::string        content;
+    std::vector<float> values;
+    size_t             offset;
+};
+
+//==================================================================================================
+//
+// File interface for Eclipse output files
+//
+//==================================================================================================
+class RifEclipseTextFileReader
+{
+public:
+    // Settings in Preferences will be used to forward to either file-direct or memory mapped file reader
+    static std::vector<RifEclipseKeywordContent> readKeywordAndValues( const std::string& filename );
+
+    // Read data directly from file
+    static std::vector<RifEclipseKeywordContent> readKeywordAndValuesFile( const std::string& filename );
+
+    // Read data using memory mapped file
+    static std::vector<RifEclipseKeywordContent> readKeywordAndValuesMemoryMappedFile( const std::string& filename );
+
+    // Data import function, public to be able to use from unit test
+    static std::pair<std::string, std::vector<float>>
+        readKeywordAndValues( const std::string_view& stringData, const size_t startOffset, size_t& bytesRead );
+
+private:
+    static constexpr const char* m_whiteSpace = " \t\n\r\f\v";
+
+    // TODO: Make private or move to separate file, now public to be able to test code
+public:
+    static std::string_view readLine( const std::string_view& source, const size_t offset, size_t& bytesRead );
+
+    // trim from end of string (right)
+    static std::string& rtrim( std::string& s, const char* t = m_whiteSpace );
+
+    // trim from beginning of string (left)
+    static std::string& ltrim( std::string& s, const char* t = m_whiteSpace );
+
+    // trim from both ends of string (right then left)
+    static std::string& trim( std::string& s, const char* t = m_whiteSpace );
+
+    // Parse string data for Eclipse keywords
+    static std::vector<RifEclipseKeywordContent> parseStringData( const std::string_view& stringData );
+};